title: Production of acoustic field with multiple focal points to control high amount of microbubbles in flow using a 2D array transducer.
abstract: We have newly developed a 2D array transducer to control the behavior of microbubbles, which is different from that for HIFU therapy, to emit continuous wave by designing acoustic field including multiple focal points. In the experiment using a straight path model, we have confirmed that higher concentration of acoustic energy does not result more aggregation. We also have confirmed the trapped areas of microbubbles are located not in the peak of the distribution of sound pressure, but in the middle range. The dispersion of acoustic energy is important because there was a relation in the trapping performance of microbubbles and the shape of acoustic field.
authors.forename: Kohji
authors.initials: K
authors.lastname: Masuda
authors.forename: Naoto
authors.initials: N
authors.lastname: Hosaka
authors.forename: Ren
authors.initials: R
authors.lastname: Koda
authors.forename: Shinya
authors.initials: S
authors.lastname: Onogi
authors.forename: Takashi
authors.initials: T
authors.lastname: Mochizuki
mesh_terms: D000162:Acoustics; D001808:Blood Vessels / Q000502:physiology; D021621:Imaging, Three-Dimensional; D045423:Microbubbles; D008853:Microscopy; D011312:Pressure; D012212:Rheology / Q000295:instrumentation*; D013016:Sound; D013997:Time Factors; D014159:Transducers